<template>
    <div>
        <nav-bar>
            <div slot="left" class="back" @click="backClick">
                <img src="~assets/img/common/back.svg" alt="" >
            </div>
            <div slot="center" class="title">
                <div v-for="(item,index) in title" 
                :key="index" class="title-item" 
                :class="{active:index===currentIndex}" @click="titleitem(index)">
                    {{item}}
                </div>
            </div>
        </nav-bar>
    </div>
</template>

<script>
import NavBar from 'components/common/navbar/NavBar'

export default {
    name:'DetailNavBar',
    
    data(){
        return{
            title:['商品','参数','评论','推荐'],
            currentIndex:0
        }
    },
    components:{
        NavBar
       
    },
    
    mounted(){
        
    },
    methods:{
        titleitem(index){
            this.currentIndex=index
            this.$emit('titleclick',index)
        },
        backClick(){
            this.$router.go(-1)
        }
    }
}
</script>

<style scoped>
.title{
    display: flex;
    font-size: 13px;
}
.title-item{
    flex: 1;
}
.active{
    color: var(--color-high-text);
}
.back{
    margin-top: 5px;
}
</style>